<link href="css/tap.css" rel="stylesheet" />
<body class="flex-column center-center">
<header>Swipe Left or Right</header>
<div class="square center-center"></div>
<!-- Scripts -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/hammer.js/2.0.8/hammer.js"></script>
<script src="js/swipe.js"></script>
</body>